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Mounting and wiring

CX8030 / CX8031 29Version: 1.6

1. Resistance between A and B at the start of the lead: approx. 110 Ohm

2. Resistance between A and B at the end of the lead: approx. 110 Ohm

3. Resistance between A at the start and A at the end of the lead: approx. 0 Ohm

4. Resistance between B at the start and B at the end of the lead: approx. 0 Ohm

5. Resistance between screen at the start and screen at the end of the lead: approx. 0 Ohm

If these measurements are successful, the cable is okay. If, in spite of this, bus malfunctions still occur, this

is usually a result of EMC interference. Observe the installation notes from the PROFIBUS User

Organization (www.profibus.com).

5.2.3.2 PROFIBUS Connection

M12 circular connector

The M12 socket is inverse coded, and has five pins. Pin 1 is 5 V

and 3 is GND for the active termination

resistor. These must never be misused for other functions, as this can lead to destruction of the device.

Pin2 and pin4 are the PROFIBUS signals. These must never be swapped over, as this will prevent

communication. Pin5 is the shield, and this is capacitatively coupled to the Fieldbus Box chassis.

M12 socket pin assignment (-B310)

M12 socket/plug pin assignment (-B318)

Nine pole D-Sub

Pin 6 is 5 V

und Pin 5 is GND for the active termination resistor. These must never be misused for other

functions, as this can lead to destruction of the device.

Pin3 and pin8 are the PROFIBUS signals. These must never be swapped over, as this will prevent

communication.

Beckhoff CX8030 User Manual

Other manuals for Beckhoff CX8030